Lubricating mechanism for sewing machines



April 20 1926.

J. P. WEIS LUBRICATING MECHANISM FOR SEWING MACHINES Original Filed June 28. 1921 '7 Sheets-Sheet 1 INVENTOR. Jar/NR PMs/.5,

April 20,1926. 1,581,765

' J. P. WEIS LUBRICATING MECHANISM FOR SEWING MACHINES Original Filed ne 1921 (Sheets-Sheet 2 I N V EN TOR.

JOHN P PMs/s.

A TTORN E Y.

April 20 1926. 1,581,765

J. P. WEIS LUBRICATING MECHANISM FOR SEWING MACHINES Original Filed Juhe 28, 1921 7 Sheets-Sheet 3 WA A m. V

'lllllllll INVEN TOR.

kin/1N]? 1 1 1 15.

A TTORNE Y.

1,581,765 J. P. WEIS LUBRICATING MECHANISM FOR SEWING MACHINES Original Filed June 28. 1921 '7 Sheets-Sheet 4.

April 20 1926.-

2Z5 i W E IIIIIIIIIIIIIIII Ill/Ill" IIIIIIIIIIIl/lll /1'NVENTOR.

A TTORNE Y.

April 20 1926.

J. P. WEIS LUBRICATING macmmxsm FOR SEWING MACHINES Original Filed June 28. 1921 7 Sheets-Sheet 5 I N VEN TOR. JOHN E W275. 2

A 'I'TORNEY.

J. P. WEIS LUBRICATING MECHANISM FOR SEWING MACHINES April 20 1926. 1,581,765

ori i l Filed June 28, 1921 '7 Sheets-Sheet ,6

'7 Sheets-Sheet '7 J. P. WEIS INVEN'TOR. JOHN P W/s.

ATTORNEY.

Original Filed June 28, 1921 LUBRICATING MECHANISM FOR SEWING MACHINES M N w. 6% .3

April 20 1926.

Passes Ass.- 20, 192e,

, unrran s ares PATENT or I-ca.

JOHN IE. WES, 01? NYAGKQNEW YORK, ASSIGNOR F ONE-HALF TO METROPOLITAN I only constantly and automatically '-lubricatsnwme macmnn conroaa'rrotr, or nracm nnw max, A conronarmn or 1 nnnnwenn.

LUBRIGATING EECHANISM' FOR SEVTING MACHINES. iv

Original application and Fans at, 1e21,serm1'm.4s1,os2. Divided and this application flied December i 4, was. Serial No. 678,398.

anism for sewing machines, an object of the invention being to provide improved means for automatic-ally lubricating various oper-. ating mechanisms of the machine, whereby.

the. machine may be rendered'more compact and simplified in construction and whereby greater eficiency and efiec-tiveness in operation maybe obtained.

This application is a division of my co pending application for sewing machines, Serial No. 481,032, filed June 28, 1921.

My invention is particularly adapted for sewing machines operable at high speeds and having mechanism for starting and stopping the machine not only at speeds between three and four thousand revolutions er minute, but also at the slowest possi le speeds, the present lubricating system not ing the mechanism, but also providing an oil buher or shock absorbing means for the starting and stopping mechanism.

Where, in sewing machines of the present character, thereqnirement of service necessitates the contminual starting and stopping of the machine at varying speeds from maximum to minimum, it is essential that 'such operation be accomplished with the least possible shock, vibration and noise, and it is one of the purposes of the present invention to so eliminate to a large extent shocks, vi-

brations, and noise as to enable the machine to run smoothly and quietly at all times. It

will be seen that an important advantage de-= rived from the present lubricating system. resides in the fact thatit furnishes an oil cushion for absorbing the shocks or blows to repain- P. was, a; do,

.- cate corresponding Other objects ofthis invention will appear 5 1n the following description and appended claims, referencebeing had to the "accomvpanymg drawings forming a part of this specification, wherein like references indi parts in the several views, and wherein Fig. 1 is a side elevation of the machine with the end cap or cover of the looper mechanism shown ,in dotted lines, and the transmitter shown in operating position under the machine, but detached-from W the work table to more clearly illustrate the relation of the transmitter with the sewing- 7 machine; Fig. 2 isa top plan View of the transmitter shown in Fig. 1; Fig. 3 is a front perspective view of the sewing ma- 0 chine, transmitter and treadle connected for operating the same; Fig. 4.- is a perspective view of the end cap for'covering the ice or and the thread controlling mechanisms; ig.

5 is an end viewof the needle bar operating 7 mechanism, portions of the needle bar bush-c ings, oil cup, and needle bar broken away to clearly show the construction, and a ortion of the arm andcrank shaft shown in roken lines; Fig. 6 1s a back elevation of the machine, illustrating the connections for. the needle drive and a portion of the looper and feed actuating mechanisms; Fig. 7 is a perspective view showingthe inside Wall of the back coverplate with the stop motion lever and its connecting parts assembled thereto; Flg. 8 is a vertical section takenthrough the vertical center line. of the crank shaft hearing, showing the cranh shaft, the assemblage of the clutch wheel with a portion of no the stop motion mechanism, and the clutch hand wheel'for turnin the mechanism of the machine by hand, t e frame of the ma-' chme belng represented by broken lines;

. Fig. 9 is a transverse section of Fig. 12, and W shows particularly the stop clutch balls in a clutched posltion; Fig. 10 is a view similar to Fig. 9, but shows the stop clutch balls in a non-clutching position; Fig. 11 is a detail view of the collar which forms-a retainer W for the clutch spring; Fig. 12 is a tragmenw tary perspective view ot aportion of the crank shaft and stop clutchshaft; Fig. 13 is a top plan view of the feeding: mechanism,

the overhangin 'arm and cylinder of the 1 machine being s own in broken lines; Fig.

; 14 is a side elevation'of the feeding mecha nism, parts being broken away to clearly show the assembla e, the overhan g portion of thearm an the machine rame being indicated in broken lines; Fig. 15 is a side elevation illustrating particularly the forwardly extending cylinder and the looper mechanism supported thereby; Fig. 16 is an end elevation of the cylinder and o tuating means partly insection; Fig. 17 is a side elevation of the stop lever, the actuating rod therefor, the stop clutch brake shoe and brake shoe lever being shown in full lines, and the frame in broken lines; Fig. 18 is a detail plan view of the stop lever,

showing its mounting in the cover plate and 7 machine frame, the same being shown in broken lines; Fi 19 is a fragmentary pers tive view 0 the end of the cylinder,

s, owing a portion of the throat plate, looper thread clamping means, and the looper thread guide tubes which conduct the thread from the rear of themachine to the thread controlling mechanism; Fig. 20 is a vertical sectional viewof the crank shaft and bear ings thereof illustrating the manner in which the parts are lubricated from the overhead reservoir and the tubular outlets leading to 22 is a detail view of the reservoir at the top ble.

of the machine, portions being broken away to show the filter and the construction of the oil gauge or indicator.

Before explaining in detail the present improvement and mode of operation thereof, I desire to have it understood that the invention is not limited to the details of construction and arrangement of parts which are illustrated in the accompanying drawings, since the invention is capable of other embodiments, and that the phraseology which I employ is for the purpose of description and not of limitation.

Referring particularly to Figs. 1, 3, 5, 6, 8, 17, 20 and 21, it will be seen that the present machine is mounted on a suitable table 1 and comprises a machine frame of special construction having flanges 2 and 3 for supporting and securing the machine to the ta- The main portion or trunk of the frame is preferably of hollow rectangular construction, closed at-the bottom and havin a frontwall 4, and a rear wall 5 prooper ac' opening 6 is irregular in form and is indicated at 6, 6, 6, 6*, 6, and 6, Fig. 6, the cover plate 7 being if similar form. and adapted when closed to seal the opening against leakage of oil.

As shown in Figs. 17 and 21 the rear wall 5 is inclined to the left of the perpendicular, an advantage thereof being to assist in properly conducting the lubricantfrom one interior part to another and to finally conduct it into the reservoir formed by the bottom 9 and side walls 4, 5, 13 and 16 of the frame. To empty the reservoir I provide a drain pipe 10 tapped into the bottom 9. The front wall 4 is provided with a boss 11, bored to .receive the cylinder 12. The side wall 13 is provided with a boss 14 to receive one of side wall 16 has a projecting rib 17 parallel to the wall 4, curved at 18, and provided with two bosses 19, the rib extending down the opposite side, parallel to the rear wall 5 as at 20, Fig. 17.

Located on the side wall 16 near the bottom is a boss 21, forming together with the bosses 19 a suitable seat for the belt guard 22 which covers the drive belt 23, and the clutch and pump wheels 93 and 425.

. The side walls 16 has a rectangular opening 24 into which projects the laterally extending portion118 of the stop lever, Fig. '18, this opening also affording a passage for the lubricant returning fromthe outer hearing 25 of the bushing 99 carried by the belt guard 22, Figs. 6 and 8. Above the opening 24 in the side wall 16 is an inwardly projecting boss 26 bored to receive bushings 101 and 101 for supportin the crank shaft. The top portion of the 'ame carrying the boss 26 is indicated at 27 and the top wall of the frame at 28, Fig. 20, wherein the needledriving means and oil distributing reser- 'voir are located. Projecting inwardly from dle bar and pre sser bar bearings 33. Above these bearings is a rectangular openin 34 through which the presser s ring and llfter lever operate. This overhanging arm 32 is provided with suitable bearings 37 and 38 for the needle operating rock shaft 39. .Se-

cured to the forwardend of the rock shaft 39 by screws 40 is a needle bar operating arm 41. The end of the shaft 39 "is tapped to receive a screw 42 and a thrust washer 43 thereby to prevent end mbvement of the arm 41 on the shaft 39. At the'outer end of the arm 41 by means of a joint pin 44 issecured a link 45, the bottom end thereof being conis hollow and the lower end is tapped to receive the needle holder 50 which carries the needles 51. The needle bar is provided with two openings 52, the upper one being an inlet and the lower one an outlet for oil for the purpose of internally oiling the upper and lower needle bar bushings 53 and 54.

Secured to the top of the upper bushing 54 is an oil cup 55 provided with a felt oiler, carrying sufficient lubricant for the needle bar, but preventing the oil from drippmg and soiling the goods. An intermediate felt oiler 56 is provided between the two bushings. These feltuoilers-wipe the needle bar in its reciprocating movement, keeping it clean and properly lubricated.

To the rear end of the rock shaft 39, adjacent to the bearing 37 is secured a crank arm 57 and ball stud 58, to which is connected the upper end of a ball connection 59. The lower end 60 also has a ,ball socket to fit over the ball 61 of the crankshaft.

Vith reference particularly to Figs. 6, 8, 11, 12 and 20, the crank shaft comprises hearing portions 62 and 63, the bearing 62 being integral with the crank disk 64 and the ball 61. The crank 65 is integral with the ball 61 and the portion of the shaft 63, the crank shaft 66 is also integral with the shaft portion 63 and with a ball 67, and the crank disc 68' is integral with balls 67 and 69, the latter forming a part of the shaft portion 70, shown in section in Fig. 8. The end portion 62 of the crank shaft is provided with a series of clutch teeth 72 to co-act with other clutch teeth 73 carried by a stub shaft 74 secured to a hand wheel 75 adapted for the purpose of turning the crank shaft and operating the mechanism of the machine by hand, if desired the shaft 74 is provided with a reduced neck 76 for the reception of the coiled spring 77 carried inthe annular groove 78 of the bushing 15. The position of the sprlng with respect to the'shaft neck 7 6'is such as to normally hold the clutch teeth 73 out of engagement with the clutch teeth 72, the contraction of the spring on the edge 79 of the neck tending to draw the shaft outward. Thus when the hand wheel 75 is forced inward by the hand of the operator to engage the clutch teeth for turning the shaft, the spring 77 is forced out of the neck and is expanded so as to causethe same to embrace the edge 79. When the inward pressure of the hand upon the wheel is removed, the contraction of the spring draws the shaft to a position where the spring enters the neck 76, disengaging the clutch teeth, and thus preventing the wheel from rotating during the o eration of the machine. 7

Re erring particularly to Figs. 6, 7, 8, 11,

:12, 17 and 18 it will be seen that the portion reduced end 71 of the stop clutch shaft. A portion of the shaft extension 70 is enlarged to form the semi-circular key-way 81 whichextends the entire length of the hole and receives a semi-circular key 82 formed as an integral part 'of the reduced portion 71 of the stop clutch shaft. The telescoping of of the shaft 70 is drilled at 80 to receive the I these parts provides a convenient way of connecting the parts for quick coupling and uncoupling, as it is necessary ,at times to withdraw the stop clutch shaft in order to renew the wedge blocks 83, hereinafter described, or other parts. 1

Adjacent to the end portion 70 of the crank shaft, and between the faces of the bushings 101 and 101, isloca-ted a collar 86 provided with a hole 87, and a key-way 87, adapted to receive and embrace the end 71 ofthe stop clutch shaft for,rotary movement therewith. The bushing 101 is recessed to receive the collar 86 so that'the the faces of the two bushings are flush with each other, thereby limiting themovement of the collar. A coil spring 87 is carried in a groove 88 terminatin at 87 on one side of the center line of t 1e shaft hole 87, see Fig. 11, and on the other side terminating at 87 The groove has two openings 87 and 87 through the rear wall of the collar 86, and through these openings the end of the spring 87 may be seen when assembling the parts, as one end of the spring abuts against the end 87 while the other end exerts pressure against a pin 89 projecting through the opening 87 and secured to and carried by a rockable stop clutch sleeve 90.

The stop clutch sleeve 90 is bored to fit over the reduced end portion 71 oft-he stop clutch shaft and such bore is also provided with a semi-circularkey-way to fit over the semi-circular key 82. The enlarged section 85-of the stop clutch shaft is provided with three radially disposed pockets 84 into which are loosely seated segmental wedge blocks 83 which receive wedgeballs 91. The

sleeve 90 is bored to fit over the enlarged portion 85 of the stop clutch shaft, and such portion is "provided with three apertures, each of which carries a ball 91. The keyway of the sleeve being larger than the key permits the sleeve 90 to be. rocked on the shaft by spring 87, as hereinafter described,

the pull of the. belt on the wheel 93 is taken up by these two bearings. The bearing 97 .is formed in the bushing 99, carried b the boss 100 of the belt guard 22, and also orms an end bearing for the enlarged end portion of the stop clutch shaft. One end portion of the stop clutch sleeve extends into the hubs 96 and of the clutch wheel and the opposite end portion thereof has a bearing in the bushing 101, supported in the boss 26 of the machine frame. This bearing is also in the form of a bushing and is provided with a cut-out 102 which extends up from the bottom for the entrance of a stop finger. This cut-out registers with an eccentrically formed stop tooth 103 (see Fig. 17) formed in the clutch sleeve 90. Directly above the cut-out or opening 102 is located a brake shoe 104 which operates in an opening 105 at the top of the bushing 101 against the stop clutch sleeve '90. A spring 106 is carried between a screw collar 108 and a shoulder 109 of a presser plug 107, and

- exerts downward pressure thereon, the shoulder 109 resting directly on the brake shoe.

The opposed surfaces of the presser plug and brake shoe are cut out forming a space between them to receive the free end, 110 of the brake lifting lever 111 adapted to rock on a stud screw 112. The free end of the brake lifting lever 111 is provided with a segmental or arcuate face 113 centeredsubstantially at 114, Fig. 17. (Jo-acting with the curved Surface 113 is an anti-friction roller 115, secured by a shoulder screw 116, to an upstanding arm or projecting member 117 of a stop lever 118, mounted on conical screws 119 tapped into the side wall of the projecting portion 8 for pivotally supportmg the stop lever 118. A stop finger 120 is connectedby a joint pin 121 to the free end of the stop lever, the upper end 122 co-acting with the stop clutchtooth 103, and the lower end 123 co-acting with the oil buffer indicated generally at 124 which is su plied with oil from a-reservoir 125, forme as a part of the stop lever.

To overcome the falling weight of the free end of the stop lever 118, aspring 126 attached at one end 127 to the inside wall of the cover plate 7 is secured as at 128 to the stop lever, and normally urges the end 122 of the stop finger into engagement or co-acti'on with the stop clutch tooth 1.03. From a consideration of Fig. 18 it will be seen that the stop lever 118 is provided with a rectangular opening 129, within which is pivotally secured a sleeve 130 by screws 131 and 132. The reduced end 132 of thesc'rew 132 is somewhat longer than the reduced end 131 of the screw 131 so as to project through the wall of the sleeve and ride freely against theflattened face 133 of the push and pull rod 134, so that the end of the screw may engage the shoulder 135 of the flattened face with one end 177 of a rock lever-174, which is pivoted at 175 on the frame of the machine. The opposite end 178 of this lever overhangs and cooperates with. one end 179 of a presser foot lifting lever 180 which is pivoted at 181 to the overhanging arm 32 of the machine frame. Supported in the bearing 33 is a bushing 187 within which reciprocates a presser bar 183 having a presser foot 188 secured to the lower end thereof. A further detail description of the resser foot operating mechanism is not eemed necessary herein since the same is fully described in my co-pending application.

Referring particularly to Figs. 1, 2 and 3 it will be seen that the power transmitter consist'sof a main bracket 143 secured to the under surface of the table lin any suitable manner, the bracket having an arm bored to receive a shaft 144. Upon this shaftis mounted a cone pulley 145 over which operates the belt 146 for transmitting power from any suitable line shaft to the pulley. This pulley 145 is provided with a frictional surface 147, co-acting with a similar the sewing machine. A bracketed lever is carried by the rock shaft 151 supported in the arm'152 for rocking movement, and the'forwardly projecting end 153 of the lever 150 has a suitable angular or cammin face adapted upon'rocking the lever inwar ly to exert inward pressure on the cone-pulley 145 thereby to force the frictional surfacesv 147 and 148 together so as to clutch the pulleys 145 and 149 for rotation.

The shaft 151 has rockably supported thereon at 154 the. lever 139, provided with a stud 155 to which is connected the upper end'of a rod 156. The lower end is connected by a couplin 1.57 to a rod 158 connected to a floor trea le 159, whereby the transmitter may be operated in order to-control the s eed of the machine.

A rake lever 161 is alsosecured to the shaft 151, and the arm 152 is provided with a lug 162 having a spring 163 inter osed between it and a lug 164 carried by t e brake lever 161. The latter is provided with a frictional surface 165 to engage the-rim 166 of the pulley 149 in order to quickly stop the pulley'ea'ch time the rod 156 is thrust upward to shut off the power. Attached to the bracket 143 is a rojecting member 167 carrying a stub sha 168 upon which ro-' tates an idler pulley 169, which directs the upward run 170 of the belt 23 to the clutch wheel 93.

Suitable means is provided for re lating 4 lating the speed of the sewing machine. A detaileddescription thereof is not deemed necessary herein since the same is fully described in my co-pending application.

The lever 150 and the brake lever 161 are secured to the rock shaft 151' and hence a downward pressure of the rod 156 swings the brake lever 161 away from the rim 166 somewhat before the frictional surfaces are brought firmly together. A reverse action of the rod 156 of course causes the frictional surfaces to separate prior to the effective operation of the brake lever 161- a ainst the rim 166. Thus when the treadle is pushed down and the outer end of the lever 139 is shifted downwardly, the pulleys 1415 and 149 will be clutched together thereby causing the transmitter to impart movement to the belt 23 in the direction of the arrows shown in Fig. 1, so as to rotate the clutch wheel 93.

This operation will take place rim to any actuation of the stop lever 118 y virtue of the fact that during the initial downward movement of rod 134 the screw 132 rides in the groove or flat surface 133. Upon a further downward movement of the foottreadle and the rod 156 connected therewith; the push and pull-rod 13 1137 will be shifted downwardly to a position where the shoulder 135 will strike the screw 132 and swing the lever 118 downwardly on the pivots 119 thereby shifting the stop finger 122out of engagement with the clutch tooth 103.

Simultaneously with this movement the roller 115, which is normally at rest above and out of contact with the brake lifting lever 111, is shifted into engagement with the corner 115 of the lever, thereby swinging the .lever on the stud screw 112, lifting the pressure plug 107 slightly against the tension of the spring 106, and releasing the friction of the brake shoe 105 on the sleeve 90. This 0 eration permits the spring 87 which is an or tension to rock the sleeve relatively to the shaft 71, thereby shifting the balls 91 into a clutching position, at

which time the crank shaft is caused to rotate to start the machine.

mounted upon afeed bar 213, which is rochably supported in thecylinder 12 by a swinging vokelink 220 embracmg the bar. Fourmotion movements are transmitted to the feed bar by the ball crank 69 of the crank shaft operating in the bearing 230' of the feed lever 231. The rear end of the feedbar I 213 is connected to the feed lever. 231 by 1 means of a joint pin 233. Mechanism is provided for adjusting and regulating the application.

length of stitch or the ,throw of the feed dog, preferably by means of self-locking adjusting mechanism. A detailed description of this mechanism is not deemed necessary herein, the same being fully described in my co-pending application.

Referring to Figs. 15 and 16, it will be seen that the looper or thread control mechanism, which is supported by the cylinder 12, is operated from the ball crank67 of the crank shaft, the latter having connected thereto a ball joint 26 5 of a lever connection 266. The lower end-of the lever 266 is pro-- vided with a 'ball socket 267 for receiving the ball 268 of an arm269 clam ed on a rock shaft 270, which is supports in bearwhich are suitably supported onthe forward end of the shaft 292, are given an elliptical path of movement. lBy loosening the screws 2741 and inserting a screw driver in the slot 274 the yoke bracket 2'12 may be' turned so as to tilt the position of the rockshaft 276. Such adjustment of the rock shaft changes the path. of movement of the lever 266'about the fulcrum ball 268 thereby adjusting the elliptical path of movement of the loopers. A further detailed description of the mechanism for adjusting and operating the looper mechanism is not deemed necessary hereln since the; same is fully described in my co pending application.

Co-acting with the stitching and feeding mechanism is a throat plate 3341, see Fig. 19, secured to the forward bearing 248 by screws 335, Fig. 15. The throat plate is provided with the usual feed slots 33? through which o crate the serrated surfaces 336 of the fee dog 208, see Fig. 13, the throat plate also being provided with the usual needle holes (not shown) through which the needles operate. The threat plate is of se mental construction forming with the cy inder 12 a complete circle when attached thereto, the cylinder being cut away on the hubs 338-338 to receive the throat plate. A projecting tongue 338 of the throat plate cooperates with a groove formed in the cylinder, Fig. 15, so that the projecting portion 339 overla s the tongue 338, thereby securely holding the rear end of the plate from tipping or moving when the pressure ofthe foot is brought to bearnpon the outer overhanging end of the throat plate.

,4, the forwardly exten ing end 340 of the throat plate is provided with beveled or 'iiiclined edges 341, and an end cap or cover 343".fits thereover, the dove-tailed grooves 342 of the cap cooperating with the inclined portions 341 and hence the same may be shifted on and oft the forward end of the throat plate. The side walls of the cap at 344 are partially slotted to make them flexible so that the cap will yield and properly fit over the beveled or inclined edges of the throat plate. The end cap is hollow to provide'free working space for the loopers and other parts adjacent thereto. In order to secure the cap 343 to the cylinder and prevent it from becoming disengaged from the throat plate during the operation of the machine the cap is provided with suitable locking means comprising a lock spring 343" projecting through an opening 343 for convenient manipulation by the operator, the cap being removed by pressmg nwardly on the spring to disengage the hook end 343 from a notch 343 formed in the side wall of the cylinder 12, see Fig. 15; This lock spring is suitably secured inside of the end cap as by a screw 343 Fig. 4. 1

As illustrated in Figs. 1 and 19, the cylinder 12 may be provided at its forward end with a projecting portion 345 extending.

outwardly to correspond in length approximately with the overhanging portion 340 of the throat plate, the extension 345 being rovided with. an end wall 346 to prevent ubricant from escaping. The curved side walls 347 of this extension are adapted to lie. in juxtaposition to the curved walls of the cap 343-thereby forming a support upon which the bottom edge 348 ofthe end cap rests.

It will be seen that by reason of the fact that the feeding and looper mechanisms are arranged and supported within the cylinder 12, the same having the enlarged opening covered by the throat plate extending a considerable distance in the rear of the needles I may do away with the use of a cover plate, and as a result of this construction greater rigidity of the parts is secured, as well as free access to the interior of the cylinder, thus eliminating loose, parts Wlth the added advantage of using a cyllnder of equal diameter throughout its length.

The cylinder is preferably constructed of steel tubing of small diameter. Small tubu-v lar work may be handled with greater fa- -cility than theusual casting which is tapered from the free end toward the machine frame, and at the same time giving the 1ncreased advantage of greater strength and rigidity. In the presentmachine the cylinder is detachably securedin the boss 11 by spot clamping screws 349,- permitting the cylinder to be removed and replaced by disconnecting 'the operating means for the looper and feed within the rear trunk'of the machine. To prevent the leakage of oil between the cylinder 12 and the boss 11 a wick insert 350 of suitable material is provided which fits into a groove of the cylinder 1 2 to form a leak-proof joint between the parts. I

Referring to Figs. 1, 3 and 19, it will be vseenthat mrichanism is provided for controlling the ooper threads, thismechanism being located adjacent to the free'end of the cylinder 12. A detailed description of the means for controlling the looper .threads is not deemed necessary herein, since a detailed description thereof is contained in my co-pcnding application, it being suflicient to state that this mechanism comprises in general a thread clamp or nipper 374 and a thread take-up or controller (not shown) wlnch give and take up the thread at the desired intervals of each stitch forming cycle. This mechanism is controlled by means of a two-arm rock lever 351 pivotally supported by the end bearing 248. Thls rock lever has an arm 353 which is provided with a cam end 355 actuated by' a cam 359 on the looper shaft'292. It will be noted that this mechanism is all accessibly located in and covered by the end cap of the machine, such location of the entire thread controlling mechanism, including the oil buffer and provides a shock absorbing fluid to and between the surfaces of parts subject to shock in the starting and stopping, as well as shocks caused by the rapid reciprocation and rotary movements ofother parts. It also obviates the necessity of oiling the machine several times each' day, as practically all of the parts requiring constant lubrication are located inside the machine frame, thuspreventing any of the flying oil escaping to the outside of the machine where it would be injurious to the goods, and objectionable to the operator. The'lubricating system emplo ed is an improvement in part over that s own and described in my Patent No. 1,348,527, of 'August 3, 1920, certain other changes and modifications being made to' adapt it to the present machine. In'the patent referred to, I employed a top and bottom hollow arm, a needle drive shaft rotating in a tube, and a looper shaft operating in a tube, each of the shafts being of tubular construction and jab the lubricant being conducted through the hollow shafts. In the present im rovement however the overhanglng arm 0 the 'machine is of L-shape construction and the needledriving means has a rock shaft instead of a rotary shaft. The needle bar isoperated through an oscillating arm 41 carried by the shaft, and as a resultof this construction the frame structure is considerabl reduced in size due for instance to the elimination of the usual gearing and crank mechanism for reciprocating the needle bar. A simple means is also provided for lubricating the needle bar, which means is independent of the-fabricating means for the major parts of the machine. The looper and feedingmechanisms operating within the cylinder are automatically lubricated, as

well as the other parts within the machine frame. Thus the only parts which need to be lubricated with'the hand oil can are the needle, bar, needle bar driving link or arm, and the forward bearing of the rock shaft.

All the other active parts being encased are automatically lubricated.

In the-patent above referred to a detachable reservoir and filter for the lubricant was used, the same being placed underneath the trunk opening of the machine frame. In the present construction the frame itself forms a reservoir having the four sides and the bottom inte al, and when the .rear cover plate is a plie the'entire structure is enclosed an is sealed against leakage.

In the present improvement the lubricating system comprises a pump belt wheel 425 a ing a leak-proof fit between t carried by the shaft 426. At the-end of this shaft is attached a small gear 427 which is' in mesh with and drives a similar'gear 428 carried by a shaft 429. These gears operate in a suitable recess of the pump casingi31 secured in the boss 30 by a set'screw-430.

The, pump casing is rovided with a peripheral groove filled wit h wicking1431 for make casting and the hole into which it fits. The gears are covered by a circular plate 432 secured to the pump casing 31 by screws 433, a packing plate 434 being interposed between the plate 432 and the pump casing to make it airtight.

4 The-plate 432 is provided with an inlet for the lubricant which is drawn in by the gearsand forced u by the tube 435 which has an angular hen 436-and a vertical portion 437. This tube is secured at 438 in the bottom wall of the reservoir 439. The

. .upper end-440 of the tube projects "through the botto'm'441 of a filter' made of very fine wire mesh screen, the filter having the side 'walls bent up, as indicated at 442 to fit snugly within the walls of the reservoir 439. The oil forced up by the pump through the tube 437 and out of .the end 440 lifts .the oil gauge plunger to the dotted line pothere is not sufiicient oil in the reservoir to supply all the parts of the machine, air is admitted in the opening of the circular plate 432, through which the oil enters, and such air will escape from the end 440 of the tube without lifting the gauge 443 above the top cover plate 447, which covers the opening through which the reservoir is inserted into the, top frame portion of the machine.

The cover plate is held in place by a shoulder screw 448 on one corner and i a thumb screw 449 at the other corner, and may be swung laterally on the screw 448 by loosening the screw 449 and swtin "ng the cover to one side for removal oft e reservoir or filter. The gauge 443 voperates through a hole in the cover .plate as shown by the sectional view, Fig. 22. The filtering screen 441 is of suitable de th to contain a quantity of oil' and is at t e same time .so located as to permit a space 450 for lubri cant to be distributed to the various tubulan outlets, or parts indicated at 451, 452, 453,

and 454, each of which having its delivery end so located 'as to deliver oil therefrom to the respective bearings. The. bottom wall of the reservoir is also rovided with one or more holes (not shown throu h which the oilmay escape to lubricate vot er hearing:

which can be reached withoutthe aid of depending tubes." The tube 4554 leads oil-tothe bushing 15, and theopposite' end 458 directing lubricant to the bushing 101% The ,Joe

the funnel 455 carried by the horizontalv tube 456, the end 457 directing lubricant to oil escapes from holes in the bottom of the connection 59 and the rear bearing 37.

The tube 451 supplies the intermediate bearings of the cran 452 supplies the crank 67, the looper actuating mec The tube 453 supplies the crank 69 and the feedin mechanism with lubricant. A portion 0 the lubricant thrown from the cranks 67 and 69 is caught by the pocket 118 and reservoir to supply the needle rockshaft 116- I shaft 63. The'tube anism, and the mechanism below it.

oils the pivots 119, see Fig. 18. Other portlons are caught upon the plate 459 secured to, the cover plate 7 by screws 460, and

which has a tapered extension which term: inates in a spout end 461 for delivering lubricant directly to the reservoir; of the stop lever 118, which supplies the 'oilbuffer 124 of the stop lever, see Figs. 7 and 20.

The oil buffer 124 is connected with the reservoir 125 by holes 124 leading from the chamber of one to the other for the passage of oil.

The bushing 15 is supplied with lubricant from the end 457 of the horizontal tube 456 and has a recess 462 to receive the lubricant. Thence it flows down through the hole 463 directly on the shaft 62. The lubricant escapes from around the shaft throu h the annular groove 78, returns through t e horizontal outlet 464, and escapes at 465 into the interior of. the machine, see Figs. 8 and 20. The oil delivered from the outlet 458 into the hole 466 of the bushing 101 is led directly to the end portion of the shaft 70, which is drilled at 466 to conduct the lubricant to a central bore 467 extending thru the hollow stop clutch shaft 71, see Fig. 8. The lubricant escapes at 468 to lubricate the bearing 25.0f the shaft in the bushing 99, and the escaping lubricant is caught in a receptacle 469, and thence passes through the tubular outlet 470'into the interior of the machine.

Some of the oil which escapes to the belt wheel 93 is thrown ofi? by the flanges 471 and is caught inside the belt wheel guard 22 by the hollow receptacle.

belt is caught in the lower hollow projection 472, having a tubular outlet 473 leading to the interior of the machine. The tubular outlets 470 and 473 projecting from the receptacles 459 and 472 deliver the lubricant caught thereby through the rectangular opening 24 in the side wall of the machine frame. fitherportions of the lubricant that escape from the opposite side of the wheel are caught by the inner wall of the projecting rib 17 and'also conducted to the interior of the machine. The upper edge of the-rec tangular opening 24, as indicated at 474, Fig. 21 is beveled from the outside to the inside so that the drippings of oil will fall to the interior of the frame. The drive belt 23, the downward run of which operates the pump wheel 425 is also located inside of the belt wheel guard 22.

When the belt 23 is put in operation by the transmitter, the pump will supply the reservoir at the top of the machine, the pump being operated independently of the driven mechanism of the machine, the operation of the same depending upon the o eration of the treadle by the operator. Tlns is an important advantage because the machine is sure to he lubricated before it is o erated, thus minimizing the liability of t tained therein, the feed bar is made trou hshaped at 47 5 and 476, see Fig. 13, so tiat Another portion which may be thrown off by the wheel or the 1,-us1,7e6 it the lubricant will flow down the inclined surface 477 of the feed bar 213, see Fig. 14, into the troughs 475 and 476. These are connected by a channel 478 having an opening at 479 to lubricate the bushing 225 which supports the feed bar. A part of the lubricant flows down the link 220 to lubricate its bearing on the stud screw 219, and ortions flow out through the opening 480, i 14, passing through the side wal s of the earing 248, which guides the forward end of the feed bar. The portion 481 between the looper shaft bearing and the slot for the feed bar is provided with a hole or slot for the passage of lubricant into the looper shaft bearing. A portion of the lubricant escapes along the looper shaft onto the cam 359 and lubricates the frictional surfaces of the parts of the thread controllin mechanism located Within the end cap of the machine. A portion of the lubricant is caught in the extension of the cylinder and revented from escape by the end wall 346, ig. 19. A return passage 482 is provided in the end bearing 248 to ermit the lubricant to return from the insi e of the cylinder to the interior of the machine by passing .through aslot 405, Fig. 16, through which the thread tubes 404 pass. In order to accomplish the return of the lubricant from the mechanisms at the front end of the-cylinder, the machine is mounted on the table at a slight angle, the free end of the cylinder 12 being slightly higher than the inner end so that the lubricant will flow to the interior of the machine.

From the foregoing it will be notedthat the machine frame within which is housed the drive shaft and operating parts for the feed and thread control mechanism forms of itself a reservoir having the four sides and bottom integral, and when the rear cover plate 7 and the belt guard'or housing oil holes leading to different bearings and also by virtue of the movement of the feed bar which throws the oil to adjoinin parts, all frictional surfaces in the cylint ler are constantly lubricated and without any oil escaping to the outside. This construction does away with the necessit of oiling the bearings from the outside 0 the work su port, which frequently results in soiling t e goods. Provision is made for conducting the Oil from the cylinder back to the machine frame within which is located the pump mechanism. It will benoted that the pum is normall submerged in oil withinthe rame, and t erefore requlres no priming, and will start to ump oil immediately upon starting the mac ine.

The gauge 444 indicates the flow of oil, and if at any time the oil in the frameor' reservoir goes below the pump, thus admitting air, the gauge will not rise in the 011 tube or conduit. This gauge is not a pressure gauge, but is controlled by the flow of oil only, and therefore indicates whether 011 is flowingwhen the machine. is operated.

Although, in the present improvement, a rotary pump is preferably used, any form of pump may be used for the purpose. Also the pump may be operated otherwise than from the drive'belt of the sewing machlne, as for instance a reciprocating pump may be operated. from some part of the interior mechanisms, or from the push and pull rod 134, but the present rotary mechanism controlled independent of the machine is pre- 'ferred on account of its great simplicity,

and reliability. The power required to 0pcrate the pump is negligible since the gears are of such tiny proportions, being preferabl inch in diameter and inch thick, and at the same time they produce an ample supply of lubricant at any speed to meet the re uirements.

i t is to be understood that by describing in detail herein any particular form, strucure or arrangement, it is not intended to liinitvthe invention beyond the terms of the several claims or the requirements of the prior art. 1

Having thus explained the nature vof my said invention and described a wayof constructing and using t'ie same, although without attempting to set forth all of the forms I in which it may be made, or'all of the modes of its use, I claim:

1. In a sewing machne,the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by each of said arms, a main drive shaft-located in the trunk in a horizontal plane and spaced below one and above the other of said shafts, said trunk formin a single chamber for carrying oil and one osed against leakage, an oil reservoir above said main drive shaft, a plurality of conduits for supplying oil from the reservoir to different parts of the main drive shaft, a ump extending into said trunk adjacent to t e bottom thereof, a conduit from said pump 'to said reservoir, and means for operating the pump.

2. In a sewing machine, the combination of a supporting trunk having at the top. thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extendin hollow work arm, a shaft carried by sald overhangin arm, a looper shaft carried by said wor arm, a crank shaft located in the trunk in a horizontal plane and spaced below one and above the other of said shafts, said trunk forming a single oil chamber and enclosed against leakage, an oil reservoir above said crank shaft, a plurality of conduits for supplying oil from the reservoir to different parts of the crank shaft, a pump extending into said trunk adjacent to the bottom thereof, a conduit from said pump to said reservoir, and means for operating the pump.

3. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottomthereof a forwardly extending hollow work arm, a shaft carried by each of said arms, a crank shaft feeding means carried by said work arm, feed actuating mechanism connected with said crank shaft, said trunk forming a single oil chamber and enclosed against leakage, an oil reservoir above said crank shaft, a plurality of conduits .for supplying oil from the reservoir, to different parts .of the crank shaft, a pump extending into said trunk adjacent to the bottom thereof, a conduit from said pump to said reservoir, and means for operating the pump.

4. Ina sewing machine,the combination of a supporting trunk having at the top thereof a forwardly extending overhangin arm and adjacent to the bottom thereof a orwardly extending hollow work arm, a shaft carried by each of said arms, a main drive shaft 10- trunk forming an oil chamber and enclosed against leakage, anoil reservoir above said main drive shaft, a plurality of conduits for supplying oil from the reservoir to'difi'erent parts of the main drive shaft, a pump extending into said trunk adjacent to the hottom thereof, a conduit from said pump to said reservoir, and means for operating the pump.

5. In a sewing-machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by each of said arms, a crank shaft located in the trunk in a horizontal plane and spaced to the side of both of said shafts,said trunk forming an oil chamber and enclosed against leakage, an oil reservoirabove said. crankshaft, a lurality of conduits for supplyin oil from t e reservoir to different parts 0% the crank shaft, a pump extending mto said trunk adjacent to the bottom thereof, a conduit from said pump to said reservoir, and means for opershaped feed bar for conducting oil into the work support. 7. In a sewing machine, the combinatio of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by each of said arms, a crank shaft located in the trunk between and extending transveresly to and connected with said shafts, said trunk forming an oil chamber and enclosed against leakage, an oil reservoir above said crank shaft, a plurality of conduits for supplying oil from the reservoir to different parts of the crank shaft, a pump extending into said trunk adjacent to the bottom thereof, a conduit from said pump to said reservoir, and means for operating the pump.

8. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by each of said arms, a crank shaft located in the trunk between and extending transversely to and connected. with said shafts, said trunk forming an oil chamber and enclosed against leakage, an oil reservoir above said crank shaft, a plurality of conduits for supplying oil from the reservoir to different parts of the crank shaft, a pum extending into said trunk adjacent to the ottom thereof, a conduit from said pump to said reservoir, means for operating the pump, feeding means carried by said work arm, and actuating means therefor connected with said crank shaft and including a feed bar carried by said hollow work arm and constructed to convey lubricant toward the free end of said work arm.

9. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by said overhangin arm, a looper shaft and a feed bar carrie by said hollow arm, a crank shaft located 1n the trunk between and connected with said shafts and also connected with said feed bar, said trunk forming an oil chamber and r enclosed against leakage, an oil reservoir above said crank shaft, a plurality of conduits for supplying oil from the reservoir to different parts of the crank shaft, a pump extending into said trunk adjacent to the bottom thereof, a conduit from said pump to saidreservoir, and means for operating the pump, said feed bar constructed to convey oil to the forward end of the work arm.

10. In a sewing machine, the combination of a hollow machine frame carrying a supply of oil and having enclosing side and bottom walls, a drive shaft in the frame and extending thru one of the side walls, a driv ing wheel connected to said shaft exteriorly of said side wall, a driving connection for said wheel, said side wall having an opening therein, a housing member enclosing said wheel and connection and covering said opening, and means carried by said housing member for conducting oil into the frame.

11. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by said overhangin arm, a looper shaft and feed bar carri by work arm, a crank shaft located 1n the trunk in a horizontal plane and spaced from said shafts, and automatic lubricating means within said trunk for conveying oil to the moving parts of the machine.

12. In a sewing machine, the combination of a supporting trunk having at thetop thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a shaft carried by said overhanging arm, a looper shaft and feed bar carried by said work arm, a crank shaft located in the trunk in a horizontal plane between and spaced from said' shafts, automatic lubricating means within said trunk for conveying Oil to the moving parts of the machine, said automatic lubricating means comprising a main oil chamber carried by the trunk, a reservoir located above said crank shaft, and an oil pump extendin into said trunk and havingan exterior drlving connection. 13. In a sewing machine, the combination of a hollow machine frame comprising to bottom and side walls forming a sing e chamber carrying an oil bath entirely enclosed within the chamber, a drive shaft in said chamber, a driving wheel connected with one end of the shaft, and located exteriorly of a side wall of the frame, a drive connection for said wheel, a housing member enclosing said wheel and driving connection and carried by said wall exteriorly thereof, means for conducting oil from the chamber to said shaft, and means carried by said housing member for collecting oil exteriorly of sald side wall and conducting the oil into said chamber.

.14. In a sewing machine, the combination said of a hollow upright machine frame having at the top thereof forwardly extending overhanging arm and adjacent to the botframe, a shaft detachably connected in alinement with said drive shaft and having a drivin wheel located exteriorly of a side wall oft Wheel, a housing member enclosing said wheel and driving means, a detachable bearing carried by said housing member for said detachable shaft, and means for conducting lubricant to said bearing.

15. In a sewing machine, the combination of a hollow upright machine frame having at the top thereof aforwardly extending overhanging arm and adjacent to the bottom thereof a' forwardly extending work support, said frame comprising top, bottom and side walls forming a single oil chamber carrying a supply of oil entirely enclosed within said chamber, a drive shaft in said chamber and extending at right angles to said work support, said shaft hav ing bearings in a pair of opposite side walls of said frame, an oil reservoir located above said shaft, a pump extending into said oil chamber, and having a driving wheel located exteriorly of the chamber, a driving wheel connected to said shaft and located exteriorly of the chamber, a housing member enclosing said wheels, a' conduit for conductin oil from said pump to said reservoir, con uits for conducting 011 from the reservoir to said shaft bearings, and means nected to said chamber and opening into said reservoir, means for forcing oil through said pipe from the chamber to the reservoir,

and an indicating plunger extendin above and below the'reservoir and into said pipe and having a collar intermediate its length and located exteriorly of said pipe and within the reservoir and extending over the upper end of said feed pipe for closing it,

that part ofthe plunger extending into the pipe having means below said collar for permltting the oil to directly engage the collar.

at the up er end of the pipe during the flowing of the oil, the movement 'of the plunger being controlled by the direct contact of the oil with said collar at the top of the pipe.- 1

he chamber, driving means for said.

17. In a sewing machine, the combination of a frame having an oil chamber and above it an oil reservoir, an oil feed pipe connected to said chamber and opening into said reservoir, means for forcing oil through said pipe from the chamber into the reservoir, and an indicating plunger having a part slidable in said pipe and havin 'thereabove a collar located exteriorly of the pipe and extending over the upper end ofthe pipe forclosing it, said slidable part having means for permitting the oil to enga e the collar at theupper end of the pipe uring the flowing o'f-' tl e ioil, the movement of the plunger being controlled by the direct contact of the oil with said collar at the top of the pipe.

18. In a sewing machine, the combination of a frame having an oil chamber and above it an oil reservoir, an oil feed pipe connected to said chamber and opening into said reservoir, means for forcing oil through said pipe from the chamber to the reservoir, and an indicating plunger having a stem slidable within said pipe and provided with flutes for the passage of oil by the stem and having at the top of said flutes a collar located exteriorly of and extending over the upper end of the pipe for closing 1t, the movement of said plunger'being controlled by the direct contact of the oil with said collar at I -part of said arm.

20. In a sewing machine, the combination of a frame havinga forwardly extending tubular work arm, feeding and. thread control mechanisms located adjacent to the outer end of said arm,-a-nd means for lubricating said mechanisms and comprising an operating member for one of said mechanisms and having a lengthwise extending channel at its upper side having an upwardly inclined part at its rear end for conducting oil from one end toward the other of said arm.

21. In a sewing machine, the combination of a frame having a forwardly extending work arm, feedin and thread control mechanismslocated a jacent to the outer end of said arm, and means for supplying oil to said mechanisms and comprising a feed bar located insaid tubular work arm and having a lengthwise extending channel for conof the tubular arm.

operating said feeding and thread control I mechanisms, one of said last means having an exterior lengthwise extending channel for conducting oil from said reservoir-to said mechanism.-

23. In a sewing machine, the combination of a frame having a forwardly extending" hollow oil-tight work support, looper. mechanism, a bearing member therefor adjacent to the front end of said work support, means for conducting a flow of lubricant thru said work support beyond said bearing, means for conducting the lubricant out of said work support, and means in front of said bearing member for preventing the escape of oil from said work support.

24. In a sewing machine, the combination of a frame having a-forwardly extending tubular work arm, a feed bar projecting through said tubular work arm, means-in said frame for operating said bar, said feed bar having a lengthwise extending trough with its inner end in position to receive oil from within said frame for conducting lubricant from such inner end to convey the same from one end toward the other end of said work arm. I I

25. In a sewing machine, the combination of a frame, a forwardlyextending tubular work arm, feed mechanism carried by said arm at its free end and including a feed bar, said feed bar constructed to receive lubricant at the inner end thereof within the frame and convey the same through said tubular work arm.

26. In a sewing machine, the combination of a frame having a forwardly extending hollow work support, feeding and looper mechanisms supported thereby, a bearing located in said work support at the front end thereof, means for conducting a lubricant to said bearing, and an end cap for said work support, said work suppprt having a bottom extension beyond said caring forming a combined lubricant receiving means and a means for supporting said end cap.

27. The combination of a machine frame having an overhanging arm, a needle drive shaftcarried by said arm, a crank shaft carried by said frame at right angles to said needle shaft, an oil reservoir above said shaft, a shaft detachably connected to said crank shaft and extending in alinement therewith, a detachableend bearing there for, and means for conducting lubricant from said reservoir 'to said bearing.

.28. The combination of a hollow machine thereby, means for supplying lubricating oil tosaid shaft, stop clutch mechanism for said shaft and having an oil buffer, said machine frame having a wall thereof inclined toward said shaft, and means secured to said inclined wall for delivering oil from said shaft to said oil buffer.

' 30. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereofa forwardly extending hollow work arm, a

- shaft carried by each of said arms, a separable two-part drive shaft located .in the trunkbetween and extending transversely to and connected with said shafts,bea rings for supporting said drive shaft, and means for automatically lubricating various parts of said drive shaft.

31. In a sewing machine, the combination of a supporting trunk having at the top thereof aforwaidly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a

shaft-carried by each of said arms, a, sepatrunk between and extending transversely of and connected with said shafts, bearings for supporting said drive shaft, and means rable two-part drive shaft located in the forwardly extending hollow work arm, a

shaft carried by each of said arms, a separable two-part drive shaft located in the trunk between and extending transversely of and connected with said shafts, bearings for supporting said drive shaft, means for automatlcally lubricating various parts of said drive shaft and comprising an oil reservoir located above said drive shaft, means for conductin the oil therefrom to said drive shaft, an vmeans for supplying oil to said reservoir.

33. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extendin hollow work arm, a shaft carried by eac of said arms, a crank shaft located in the trunk between and extending transversely to and connected with said shafts, bearings for supporting said crank shaft, and means for automatically lubricating various parts of said crank shaft.

34. In a sewing machine, the combination of a supporting trunk having at the top thereof a forwardly extending overhanging arm and adjacent to the bottom thereof a forwardly extending hollow work arm, a

1 shaft carried by each of said arms, a crank shaft located in the trunk between and extending transversely to and connected with said shafts, bearings for supporting said crank shaft, means for lubricating various parts of said crank shaft and comprising an oil reservoir located above said crank shaft, means for conducting the oil there'- from to said crank shaft, and means for supplying oil to said reservoir.

Signed a Nyack, New York, this 231d 20 day of November, 1923.

' JOHN P. WEIS. 

